38299979 has 4 divisors (see below), whose sum is σ = 38318976. Its totient is φ = 38280984.

The previous prime is 38299957. The next prime is 38299999. The reversal of 38299979 is 97999283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97999283 = 19 ⋅5157857.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38299979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38299999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6059 + ... + 10644.

It is an arithmetic number, because the mean of its divisors is an integer number (9579744).

Almost surely, 2^38299979 is an apocalyptic number.

38299979 is a deficient number, since it is larger than the sum of its proper divisors (18997).

38299979 is a wasteful number, since it uses less digits than its factorization.

38299979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18996.

The product of its digits is 2204496, while the sum is 56.

The square root of 38299979 is about 6188.6976820653. The cubic root of 38299979 is about 337.0798913631.

The spelling of 38299979 in words is "thirty-eight million, two hundred ninety-nine thousand, nine hundred seventy-nine".